Just to piggy-back, I started my opening today, too!

First thing I did after the safety mesh was off was test the water:
FC:0
CC:0
TC:0
pH: ~7.0
T/A: 0-10 ppm
Calcium: 20 ppm
CYA: 0

Despite this the water was (as it usually is at opening) clear. Lots of junk on the bottom, and some algae on the walls, but I tossed in the Blue Diamond for the first pass and 2 gallons of 12.5% LC. Just for starters.

Tomorrow, I'm going to hook up the pump and drop the return and drain plugs and get it filtering. Probably add a stack of Tri-chlor in a floater or two for chlorine and CYA and a box of Washing Soda for pH AND T/A.